Results 71 to 80 of about 59,015 (252)
Journal of Ultrasound in Medicine, EarlyView.Objectives To compare the application value of 4‐dimensional hysterosalpingo‐contrast sonography (4D‐HyCoSy) and x‐ray hysterosalpingography (HSG) in intrauterine insemination (IUI) patients. Methods In this retrospective study, a total of 725 infertile patients who underwent IUI in Ganzhou Maternal and Child Health Hospital from January 2023 to June ...
Yongyu Xie +3 more
wiley +1 more source
Gaoya dianqi, 2014 由于SF6气体的温室效应,减少SF6气体的使用具有深远的社会意义,用SF6/N2混合气体取代纯SF6气体作为高压电器设备的绝缘介质是减少使用SF6气体的有效措施。介绍了SF6/N2混合气体的优点。从气体放电理论出发,对不同比例SF6/N2混合气体的绝缘性能进行了分析,结果表明:SF6体积分数仅为20%的SF6/N2混合气体击穿强度为相同气体压力纯SF6的70%左右;若SF6体积分数为20%的SF6/N2混合气体的击穿强度要达到纯SF6气体的击穿强度,其总压力应为纯SF6气体的1.4倍 ...
牛文军, 魏俊梅, 张铎, 孙永恒
doaj
Investigation of insulation properties and synergistic effects in CF3I/N2 gas mixtures using the Boltzmann equation [PDF]
AIP AdvancesCF3I is regarded as a highly promising substitute for SF6; however, due to its high boiling point, buffer gases such as N2 must be blended. To evaluate the feasibility of replacing SF6 and its mixtures with CF3I/N2, a comparative analysis was conducted ...
Ziyuan Wang +4 more
doaj +1 more source
Optical Skyrmions with Tunable or Reconfigurable Topology Using Spin‐Decoupled Metaoptics
Laser &Photonics Reviews, EarlyView.The work introduces advanced optical elements capable of generating and dynamically reconfiguring complex light patterns known as optical skyrmions. By precisely shaping light polarization at the nanoscale, a single engineered metasurface can generate and manipulate robust and tunable polarization textures in an efficient and scalable way.
Andrea Vogliardi +5 more
wiley +1 more source
Nonlinear Resonance Modulation in Single‐Crystalline VO2‐Integrated Si Ring Resonator
Laser &Photonics Reviews, EarlyView.This work first demonstrates a single‐crystalline VO2–Si hybrid ring resonator. The epitaxial lift‐off process enables high‐quality VO2 integration on the dissimilar Si photonic platform. The high‐quality VO2 film exhibits exceptional nonlinear resonance modulation and a steep optical transition across the metal‐insulator transition. ABSTRACT The metal‐
Sebae Park +5 more
wiley +1 more source
Two-Level Fault Diagnosis of SF6 Electrical Equipment Based on Big Data Analysis
Big Data and Cognitive Computing, 2019 With the increase of the operating time of sulphur hexafluoride (SF6) electrical equipment, the different degrees of discharge may occur inside the equipment.
Hongxia Miao +4 more
doaj +1 more source
Modifications to Langley 0.3-m TCT adaptive wall software for heavy gas test medium, phase 1 studies [PDF]
The scheme for two-dimensional wall adaptation with sulfur hexafluoride (SF6) as test gas in the NASA Langley Research Center 0.3-m Transonic Cryogenic Tunnel (0.3-m TCT) is presented.
Murthy, A. V.
core +1 more source
Responsive Phase Gradient Metasurface for Laser Stealth and Dynamic Thermal Camouflage
Laser &Photonics Reviews, EarlyView.The graphical abstract depicts a phase‐gradient metasurface enabling directional scattering and emissivity‐controlled thermal radiation. The engineered phase profile redistributes the reflected optical momentum, suppressing specular reflection and generating non‐specular scattering.
Zhihao Yuan +7 more
wiley +1 more source
The novel properties of SF$_6$ for directional dark matter experiments
, 2016 SF$_{6}$ is an inert and electronegative gas that has a long history of use in high voltage insulation and numerous other industrial applications. Although SF$_{6}$ is used as a trace component to introduce stability in tracking chambers, its highly ...
Lafler, R. +6 more
core +1 more source
Thin Fluoride Insulators for Improved 2D Transistors: From Deposition Methods to Recent Applications
physica status solidi (RRL) – Rapid Research Letters, EarlyView.2D materials hold significant promise for next‐generation electronic and optoelectronic devices, but suitable gate dielectrics are still a challenge. Fluoride insulators, offering inert, dangling‐bond‐free surfaces, have recently emerged as strong candidates. This review covers recent publications on high‐quality fluoride thin‐film deposition and their
Behzad Dadashnia +3 more
wiley +1 more source